Does this send an email?

No. It checks format and the domain's mail (MX) records only; it never contacts the mailbox.

Can it confirm a mailbox exists?

Not fully. A valid domain with mail servers is a strong sign, but only a real email can confirm a specific inbox.

What is a disposable email?

A temporary throwaway address like mailinator.com. Many sites block them at sign-up.

No. Only the domain part is looked up through Cloudflare's public DNS; nothing is saved.

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Email Validator— Check if an email address is valid.

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How to Use the Email Validator

Type an email address, or paste a list with one per line, and tap Check. Each address gets a format check, typo suggestion, disposable-email warning and a live check that its domain has mail servers.

Frequently Asked Questions

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How to Use the Email Validator

Frequently Asked Questions

Does this send an email?

Can it confirm a mailbox exists?

What is a disposable email?

How many can I check?

Is my data stored?

More free tools